Natural Gas Smell

What's that smell?

You can't see or taste natural gas so we made sure you can smell it. A harmless gas called mercaptan is added to natural gas to make it smell like rotten eggs (or sulphur). Smoke alarms and carbon monoxide alarms can't detect a gas leak, but your nose can.

No energy source is safer or more reliable than natural gas. Leaks are rare but if one does occur, you need to know what to do to keep your home and family safe.

Natural gas isn't toxic but it's highly flammable. Here's what to do if you smell that smell:

  • Evacuate your home immediately
  • Call Union Gas at 1-877-969-0999 or 911 from a safe distance (like a neighbour's home)
  • Don't use electrical switches, appliances, phones, garage door openers, motors or motor vehicles, matches or lighters and don't smoke

Smell rotten eggs?
Use your legs!

Make sure everyone in your household knows what to do if they smell a gas leak. WATCH AND STAY SAFE

Make sure everyone in your household knows what to do if they smell a gas leak. WATCH AND STAY SAFE

FAQs

What are the signs of a gas leak outside?

There are four signs of a gas leak:

Smell: Strong rotten egg or sulphur-like smell
Sight: Bubbles in standing water, wet or flooded areas. Patches of dead grass or "frosting" of white dust on the ground
Sound: Hissing noise from a pipe or appliance

What should I do if I suspect a leak outside?

Natural gas is highly flammable. If you suspect a leak:

  1. Get away from the area
  2. Don't start motors or motor vehicles near the area
  3. Don't use matches or lighters and don't smoke
  4. Call Union Gas at 1-877-969-0999 or 911 from a neighbour’s home

How will Union Gas respond?

In the event of a natural gas emergency, the Union Gas emergency response team or local community authority will:

  1. Respond to the incident site
  2. Identify the source of the problem and ensure the emergency site has been cleared of anyone whose safety may be at risk
  3. Make the situation safe
  4. Advise the customer of their options with respect to the piping system or gas-fired equipment repair